Performs an alpha composite of an RGBA16U image over a solid background color.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
A pointer to a vImage buffer that references 16-bit RGBA interleaved source pixels.
A pointer to a vImage buffer data structure. You're responsible for filling out the
rowfields of this structure, and for allocating a data buffer of the appropriate size. On return, the data buffer this structure points to contains the destination image data. When you no longer need the data buffer, you must deallocate the memory.
A pointer to Pixel_ARGB_16U that references 16-bit RGBA premultiplied background color.
Trueif the source image is premultiplied; otherwise,
The options to use when performing the operation. If you plan to perform your own tiling or use multithreading, pass
Image Do Not Tile
The per-pixel operation is:
The source and destination buffers must have the same height and width.